}
static DEVICE_ATTR_RW(msi_bus);
-static DEFINE_MUTEX(pci_remove_rescan_mutex);
static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
size_t count)
{
return -EINVAL;
if (val) {
- mutex_lock(&pci_remove_rescan_mutex);
+ pci_lock_rescan_remove();
while ((b = pci_find_next_bus(b)) != NULL)
pci_rescan_bus(b);
- mutex_unlock(&pci_remove_rescan_mutex);
+ pci_unlock_rescan_remove();
}
return count;
}
return -EINVAL;
if (val) {
- mutex_lock(&pci_remove_rescan_mutex);
+ pci_lock_rescan_remove();
pci_rescan_bus(pdev->bus);
- mutex_unlock(&pci_remove_rescan_mutex);
+ pci_unlock_rescan_remove();
}
return count;
}
static void remove_callback(struct device *dev)
{
- struct pci_dev *pdev = to_pci_dev(dev);
-
- mutex_lock(&pci_remove_rescan_mutex);
- pci_stop_and_remove_bus_device(pdev);
- mutex_unlock(&pci_remove_rescan_mutex);
+ pci_stop_and_remove_bus_device_locked(to_pci_dev(dev));
}
static ssize_t
return -EINVAL;
if (val) {
- mutex_lock(&pci_remove_rescan_mutex);
+ pci_lock_rescan_remove();
if (!pci_is_root_bus(bus) && list_empty(&bus->devices))
pci_rescan_bus_bridge_resize(bus->self);
else
pci_rescan_bus(bus);
- mutex_unlock(&pci_remove_rescan_mutex);
+ pci_unlock_rescan_remove();
}
return count;
}
EXPORT_SYMBOL(pci_scan_bridge);
EXPORT_SYMBOL_GPL(pci_scan_child_bus);
+/*
+ * pci_rescan_bus(), pci_rescan_bus_bridge_resize() and PCI device removal
+ * routines should always be executed under this mutex.
+ */
+static DEFINE_MUTEX(pci_rescan_remove_lock);
+
+void pci_lock_rescan_remove(void)
+{
+ mutex_lock(&pci_rescan_remove_lock);
+}
+EXPORT_SYMBOL_GPL(pci_lock_rescan_remove);
+
+void pci_unlock_rescan_remove(void)
+{
+ mutex_unlock(&pci_rescan_remove_lock);
+}
+EXPORT_SYMBOL_GPL(pci_unlock_rescan_remove);
+
static int __init pci_sort_bf_cmp(const struct device *d_a, const struct device *d_b)
{
const struct pci_dev *a = to_pci_dev(d_a);
}
EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
+void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev)
+{
+ pci_lock_rescan_remove();
+ pci_stop_and_remove_bus_device(dev);
+ pci_unlock_rescan_remove();
+}
+EXPORT_SYMBOL_GPL(pci_stop_and_remove_bus_device_locked);
+
void pci_stop_root_bus(struct pci_bus *bus)
{
struct pci_dev *child, *tmp;
void pci_dev_put(struct pci_dev *dev);
void pci_remove_bus(struct pci_bus *b);
void pci_stop_and_remove_bus_device(struct pci_dev *dev);
+void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev);
void pci_stop_root_bus(struct pci_bus *bus);
void pci_remove_root_bus(struct pci_bus *bus);
void pci_setup_cardbus(struct pci_bus *bus);
int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge);
unsigned int pci_rescan_bus(struct pci_bus *bus);
+void pci_lock_rescan_remove(void);
+void pci_unlock_rescan_remove(void);
/* Vital product data routines */
ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);